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Claude 3.5 Sonnet vs DeepSeek-V2

Anthropic · released

Wins 2 of 2 areas

Reasoning · Long documents

DeepSeek · released

Wins 0 of 2 areas

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Claude 3.5 Sonnet is the stronger all-rounder.

Scores updated · 24 tests both models report · How we compare

Where each one wins

Tests won in each of the two areas where both have results. Each piece is one test, so a longer bar means more evidence; grey means the two scored within a point of each other.

Reasoning and long documents rest on a single test each.

What it costs

Prices per million tokens, roughly 750,000 words. The bars show the cost of a million tokens read plus a million written.

Claude 3.5 Sonnet$3.00 to read · $15.00 to write$18Price from Artificial Analysis
DeepSeek-V2No current price is tracked.

The biggest differences

The tests each model wins by the widest margin, up to three each. Scores are out of 100.

Where Claude 3.5 Sonnet pulls ahead

  • Graduate-level biology, physics and chemistry questionsGPQA Diamond+20.7points aheadClaude 3.5 Sonnet56DeepSeek-V235.3
  • Questions about very long textsLongBench v2+9.4points aheadClaude 3.5 Sonnet41DeepSeek-V231.6

Where DeepSeek-V2 pulls ahead

No clear win on a test scored out of 100.

Every test, side by side

All 24 tests both models report. The winning score is in its model's colour; marks a score checked independently.

ReasoningClaude 3.5 Sonnet

Full reasoning ranking

Long documentsClaude 3.5 Sonnet

Full long documents ranking

Other results22 tests, not counted

Tests outside the eight areas. They are not counted above: several are summary scores built from other tests, or the same test under another name.

Questions people ask

Which is better, Claude 3.5 Sonnet or DeepSeek-V2?

Claude 3.5 Sonnet wins all two areas where both have results: reasoning and long documents. DeepSeek-V2 wins none.

How do you compare the two?

We use the 24 benchmark tests both models have published scores on. The verdict counts the 2 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 22 are listed but not counted, because several are summary scores or repeat a test. Each score is the one shown on the model's own page.